.document-background {
    position: relative;
    overflow-y: auto;
    min-height: 4rem;
    background: white;

    display: flex;
    justify-content: center;
    align-items: center;

    overflow: hidden;
}

.document-background::-webkit-scrollbar {
    display: none;
}

.document-background .document-playback-menu {
    height: 0.88rem;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0 0.24rem;
    background: white;
    z-index: 28;
}

.document-background .document-playback-menu .document-playback-button {
    height: 0.48rem;
    width: 0.48rem;
}

.document-background .document-playback-menu .document-playback-menu-title {
    margin-left: 0.12rem;

    /* 单行超出... */
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.document-background .document-playback-list {
    margin-top: 0.24rem;
}

.document-background .document-playback-list li {
    padding-top: 0.24rem;
    
}

.document-background .document-playback-content {
    overflow: hidden;
    background: white;
    z-index: 21;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;

    border-top: 0.02rem solid #E8E8E8;
}

.document-background .document-playback-content .document-playback-image-background {
    overflow: auto;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    position: absolute;
}

.document-background .document-playback-content .document-playback-image-background::-webkit-scrollbar {
    display: none;
}

.document-background .document-playback-content .document-playback-pic {
    width: 99%;
    height: 99%;
    z-index: 22;
    object-fit: contain;
    touch-action: pan-x pan-y;
}

.document-background .document-playback-content .document-playback-pic::-webkit-scrollbar {
    display: none;
}

.document-background .document-playback-content .document-playback-top-index {
    line-height: .6rem;
    text-align: center;
    position: absolute;
    width: 4rem;
    height: .6rem;
    background: rgba(0,0,0,.2);
    border-radius: 0 0 0.08rem 0.08rem;
    left: 50%;
    margin-left: -2rem;
    color: #fff;
    z-index: 23;
    top: 0;
}

.document-background .document-playback-content .document-playback-left {
    z-index: 23;
    background: rgba(0,0,0,.5) url('../../../../assets/images/doc_prve.png') no-repeat right center;
    background-size: 0.48rem 0.48rem;
    left: 0;
    bottom: 50%;
    border-radius: 0 0.08rem 0.08rem 0;
    width: 0.6rem;
    height: 0.8rem;
    position: absolute;
    border-width: 0rem;
}

.document-background .document-playback-content .document-playback-right {
    z-index: 23;
    background: rgba(0,0,0,.5) url('../../../../assets/images/doc_next.png') no-repeat right center;
    background-size: 0.48rem 0.48rem;
    right: 0;
    bottom: 50%;
    border-radius: 0.08rem 0 0 0.08rem;
    width: 0.6rem;
    height: 0.8rem;
    position: absolute;
    border-width: 0rem;
}

.document-background .document-playback-content .document-playback-narrow {
    z-index: 23;
    background: url('../../../../assets/images/narrow.png') no-repeat right center;
    background-size: 100% 100%;
    bottom: 0.64rem;
    
    width: 0.88rem;
    height: 0.88rem;
    margin: 0.3rem;
    position: absolute;
    left: 30%;
    border-width: 0rem;
}

.document-background .document-playback-content .document-playback-enlarge {
    z-index: 23;
    background: url('../../../../assets/images/enlarge.png') no-repeat right center;
    background-size: 100% 100%;
    bottom: 0.64rem;
    
    width: 0.88rem;
    height: 0.88rem;
    margin: 0.3rem;
    position: absolute;
    left: 50%;
    border-width: 0rem;
}
